RFR(S): 8043915: Tests get ClassNotFoundException: com.oracle.java.testlibrary.StreamPumper

[Yekaterina Kantserova]

Hi,

Could I please have a review of this fix.

webrev: http://cr.openjdk.java.net/~ykantser/8043915/webrev.00/
bug: https://bugs.openjdk.java.net/browse/JDK-8043915

When using @library in a JTreg test even @build need to be specify for 
all library files used by the test. If @build is not specified it can 
lead to intermittent failures when for example running tests 
concurrently, since javac implicit compilation and @library and 
-concurrency don't play well together.

Verified locally.

Thanks,
Katja